overmaster

verb

1. (transitive)To overpower or overwhelm.

   “Sir Jasper started from his chair, ashamed of the sick fancies that had, for the moment, overmastered him.”

   “Did I forget! Shall I ever . . . can I ever! Can any of us ever forget that terrible scene! Mina struggled hard to keep her brave countenance, but the pain overmastered her and she put her hands before her face, and shuddered whilst she moaned.”